Double-cylinder hydrocarbon-motor.



Patented May 6, |902.

(Application led July 5, 1900.)

(No Model.)

ll'nirrnn STATES PATENT FSFICE.

FRITZ DRR, or sonLAcnTnNsEi-, GERMANY.

DOUBLE-CYLINDER HYDROCARBONNIOTOR.

SPECIFICATION forming part of Letters Patent No. 699,503, dated 6, 1902. Application filed July 5| 1900. Serial No. 22.584. (No model.)

To all whom, may concern:

Be it known that I, FRITZ DRR, a subject of the Emperor of Germany, residing at Schlachtensee, in the Empire of Germany, have invented certain new and useful Improvementsin Double-Cylinder Hydrocarbon- Motors, of which the following is a full, clear, and exact specification.

The present invention relates to an improvement in hydrocarbon-motors; and the same consists in journaling the driving-shaft between the two cylinders. In each cylinder is contained two pistons moving in opposite directions. Each two pistons are attached to the double crank-shaft by connecting-rods, so that they counter-balance each other. In each working cylinder is arranged a common working space, and in each cylinder the operation is accomplished in four-cycle form.

The working periods in the two cylinders are arranged as follows: It occurs that in the one cylinder explosion, exhaust, admission, compression; in the other-cylinder admission, compression, explosion, exhaust. In consequence of this distribution of work a universal turning effect is exerted on the drivingshaft.

Figure 1 shows such a hydrocarbon-motor with vertically-arranged working cylinders in cross-section; but the cylinders may be arranged hoizontally. Fig. 2 is a vertical section on line II II of Fig. 1, and Fig. 3 isa vertical section on line III lll of Fig. 1 viewed in the direction of the arrow 5.

The working cylinders 6 and 7 are connected by a foundation-plate 8. On the latter are arranged the journal-boxes 9 and lO, in which the double cranked driving-shaft 11 is journaled. In each cylinderare placed two pistons 12 and 13, running in opposite directions. Each piston is connected by a connecting-rod l-i with a swinging double lever 15 16 17 1S. Each double lever is connected to a pivoted arm 19 in the journal/tl on the cylinder. The two ends of the double levers l5 and 1G are turned toward each other and inovably coupled together by a bolt 20. The levers 17 and 1S arelikewise secured. To cach of these bolts is attached a connectingrod 2l 22, which are connected with the double crank-shaft. Two of the pistons 12 and 13 have a common working spacev 24 and 25,

valve-gearing.

and from the latterlead aport 26 to the valvechests 27 and 2S, arranged on the outside of the cylinder. In each valve-chest are contained two valves 30 and 3l, closed by springs 29, of which the first is the suction-valve, the latter acting as an exhaust-valve. The suction-valve opens automatically, while the exhaust-valve is operated at the proper time by For this purpose two gearwheels 32 and 35 are arranged on the drivingshaft, and two gearwheels 34E and 36 are placed on a counter-shaft in the journal 9. The wheel32 is secured to the driving-shaft, while the wheel 35 is loose. The Wheels 33 36 are mounted so as to move together. The proportion of these four wheels is such that while the wheel 32 makes two revolutions the wheel 35 makes one-tl e., two to one.

The wheel 35 is firmly secured to a cam-plate 37, whose cam-finger alternately exerts its iniiuen ce on pivoted levers 39 40, properly journaled on both cylinders. Each of these levers engages with the valve-Steins 3l of the valves.

When an explosion occurs in the space 24, the drivingshaft turns one hundred and eighty degrees, while the wheel 35, with the cam-plate 37, has only made ninety degrees. The cam 38 then acts on the lever 39, and the exhaust-valve 31 is opened, so that the burned gases in the cylinder can escape to the open air.

During the explosion in the space 24 the space 25 is iilled with fresh-gas mixture as the valve 30 in the valve-chest opened automatically, while at the same time in the space 25 a vacuum has been produced by the pistons moving apart. The springs ofthe valves 3l must be self-actin g and stronger than those of the valves 30 to prevent the admission through thevalves 3l by self-action of the valves. If the explosion has occurred in the space 25, then the cam 38 will have come in contact with the valve-stem in the chest of the valve 3l, so that the latter will open and the burned gases from the working space 25 escape.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A hydrocarbon-motor comprising two parallel cylinders, two oppositely-moving pistons in each cylinder, a driving-shaft jour- IOO parallel adjacent cylinders each having two oppositely-moving pistons, an inlet-valve and an exhaust-valve, a crank-shaft mounted between the two cylinders and connected with the aforesaid pistons, a cam-wheel rotatable upon the crank-shaft, mechanism driving the cam-wheel, and a swinging arm on each of said cylinders actuated by the said cam-wheel and operating the exhaust-valves.

In witness whereof I have hereunto set'my 2 5 hand in presence oi two witnesses.

FRITZ DURR. Witnesses:

WOLDEMAR HAUPT, HENRY HAsPER. 

